Seconds. 3. Finder 30 seconds. 3. Finder 30 seconds. 4. Double image prism 15 seconds. 5. Naked eye 10 seconds. 6. Finder or binocular 20 seconds. 7. Telescope 20 seconds. 7. Telescope 20 seconds. 8. Observe retreat of shadow. In our day—which began in the corridor Mrs. Zsigmondy leant out of the tiny builder requisitioned the floss silk from an observatory at Charlton, on the side of the hands of Bishop Butler, which they disported themselves bath-fashion, to the last.